I'm interested about this too. The Disneyland Parking Garage thread recently started to pick up again, not because of construction updates but rather lack of any updates. I can't imagine Disney is giving up on the pedestrian overpass, but it they are having problems getting it approved it would probably mean they can't close the current pedestrian esplanade which I believe was part of the Marvel Land expansion.
It will be approved. The issue is Disney providing guarantees that the current Harbor Blvd. ped entrance won't disappear, which would gravely harm businesses along the road and make DLR more of a bubble. I don't see anyway this will be allowed. Anaheim isn't Orlando.